I am big fan of nail competitions. I believe that it is the best way to push you out of your comfort zone and force you to master your nail sculpting in a short period of time.
If you think that you need to upgrade skills listed below you should definitely give it a try.
I did this set on a competition in Las Vegas in French Twist category and it got 1st place. According to the rules you are allowed to use only white, clear and sheer pink colors and you can also use glitter.